AME5250 Datasheet, PDF (7/21 Pages) Analog Microelectronics – 1A, 1.5MHz Synchronous Step-Down Converter

AME
AME5250
1A, 1.5MHz Synchronous
Step-Down Converter
n Electrical Specifications
V_IN=3.6V, V_OUT=2.5V, V_FB=0.6V, L=2.2µH, C_IN=4.7µF, C_OUT=10µF, T_A=25^oC, I_MAX=1A unless otherwise specified.
Parameter
Symbol
Test Condition
Min Typ Max Units
Input voltage
Output Voltage Accuracy
Adjustable Output Range
Feedback Voltage
Feedback Pin Bias Current
Quiescent Current
(For Adjustable Output Voltage)
V_IN
∆VOUT
V_out
V_FB
I_FB
I_Q
2.5
5.5
V
V_IN=2.5 to 5.5V, in PWM mode _-3
For Fixed Output Voltage
3
%
V_FB
V_IN-0.2 V
For Adjustable OutputVoltage 0.588 0.6 0.612 V
V_FB=V_IN
-50
50
nΑ
I_OUT=0mA, V_FB=1V
20 35
µA
Quiescent Current
(For Fixed Output Voltage)
I_Q
I_OUT=0mA, in PFM mode
35 40
µA
Shutdown Current
I_SHDN
V_EN=GND
0.1 1
Switch Frequency
f_OSC
1.2 1.5 1.8
High-side Switch On-Resistance
Low-side Switch On-Resistance
Switch Current Limit
EN High (Enabled the Device)
EN Low (Shutdown the Device)
Input Undervoltage Lockout
Input Undervoltage Lockout
Hysteresis
R_{DS,ON, LHI}
R_{DS,ON, LO}
I_SW,CL
V_EN,HI
V_EN,LO
V_UVLO
V_{U VLO, H Y ST}
I_SW=200mA, V_IN=3.6V
I_SW=200mA, V_IN=3.6V
V_IN=2.5 to 5.5V
V_IN=2.5 to 5.5V
V_IN=2.5 to 5.5V
rising edge
0.28
0.25
1.4 1.6
1.5
0.4
1.8
0.1
Thermal Shutdown Temperature
OTP Shutdown, temperature increasing
160
Maximum Duty Cycle
SW Leakage Current
D_MAX
100
EN=0V, V_IN=5.0V
-1
1
V_SW=0V or 5.0V
µA
MHz
Ω
Ω
A
V
V
V
V
o_C
%
µA
Rev.B.04
7